28085185 has 8 divisors (see below), whose sum is σ = 35167680. Its totient is φ = 21491184.

The previous prime is 28085153. The next prime is 28085191. The reversal of 28085185 is 58158082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28085185 - 2⁵ = 28085153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121995 + ... + 122224.

It is an arithmetic number, because the mean of its divisors is an integer number (4395960).

Almost surely, 2^28085185 is an apocalyptic number.

It is an amenable number.

28085185 is a deficient number, since it is larger than the sum of its proper divisors (7082495).

28085185 is a wasteful number, since it uses less digits than its factorization.

28085185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244247.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 28085185 is about 5299.5457352494. The cubic root of 28085185 is about 303.9665280841.

The spelling of 28085185 in words is "twenty-eight million, eighty-five thousand, one hundred eighty-five".